From airport buses wrapped in ads to billboards to signs like this one seen at Delta's Terminal 3 at New York JFK Airport, Delta is making sure folks know about its impending improvements at "T4." By Ben Mutzabaugh, USA TODAY

It takes some imagination to picture it, but this will be one of Delta's new T4 check-in lobbies. The area will cater to Delta and SkyTeam's elite "Sky Priority" customers. When the project is completed, Delta says T4 will offer 14 check-in positions dedicated to its Sky Priority customers. By Ben Mutzabaugh, USA TODAY

This rendering provided by Delta shows what the airline expects the T4 Sky Priority elite check-in area to look like following its completion. Delta Air Lines

This rendering provided by Delta shows what this part of T4 is expected to look like from the outside following its completion. Delta Air Lines

Work progresses on a new TSA security checkpoint at T4. Delta says the 12 new checkpoint lanes will shorten processing time, which is currently split between two separate locations at T4. By Ben Mutzabaugh, USA TODAY

The new consolidated checkpoint lanes also will allow T4 to move its large retail atrium post-security. Both Delta and T4 officials say they expect the move to be a hit with fliers who prefer to go through security before taking the time to browse at retail outlets. By Ben Mutzabaugh, USA TODAY

The T4 construction team makes progress on the new security checkpoint, which is located on a newly constructed terrace that extends over the airport's existing retail area. Previously, the retail area had been under a large, atrium-style ceiling. By Ben Mutzabaugh, USA TODAY

Harry Olsen, Delta's Program Director – JFK Redevelopment Project, shows off another addition under construction just past T4's new consolidated check-in area. Olsen says Delta is "confident we're going to open on schedule and under budget." By Ben Mutzabaugh, USA TODAY

This rendering provided by Delta shows what the new consolidated and expanded central security checkpoint is expected to look like. Delta Air Lines

Work is underway on a new passageway that was created by the addition of a second-level security terrace, which was built over what had been a large atrium area. By Ben Mutzabaugh, USA TODAY

Work is underway on a new passageway that was created by the addition of a second-level security terrace, which was built over what had been a large atrium area. By Ben Mutzabaugh, USA TODAY

The high-end shopping area of JFK's Terminal 4 is seen through construction fencing. The shopping area, currently located prior to security checkpoints, will be past security once the Terminal 4 upgrades are finished. By Ben Mutzabaugh, USA TODAY

The B Concourse of JFK Airport's T4 currently ends at Gates B30 and B31, but that will be extended by 9 gates – and 346,000 square feet – once the redevelopment project is completed. By Ben Mutzabaugh, USA TODAY

It's not yet within view of passengers, but this is what lies just beyond the wall that's currently at the "end" of T4's B Concourse. By Ben Mutzabaugh, USA TODAY

Come the summer of 2013, this construction area will house one of the nine new gates being added to the end of T4's B Concourse. Views of the airfield are built into most gate areas. By Ben Mutzabaugh, USA TODAY

It's hard to envision in this picture, but this dull concrete floor currently seen in the gate-extension at T4 will soon be sanded and polished to become the slick, smooth terrazzo floor fliers are accustomed to seeing at modern airport terminals. By Ben Mutzabaugh, USA TODAY

This rendering provided by Delta shows what the newly added gate areas are expected to look like – including the finished terrazzo floors that were seen unfinished in the previous slide. Delta Air Lines

Delta's existing Terminal 3 (seen here) will be demolished following the completion of the T4 redevelopment. It's unlikely that many Delta fliers will be sad to see the unpopular terminal go. The demolition of T3 is likely to occur in 2014, after abatement measures are taken. By Ben Mutzabaugh, USA TODAY

Delta will move out of T3 – seen here with the New York City skyline in the far distance – in an "overnight" transfer to its operations at the existing T2 facilities and at the enhanced T4. The overnight move is similar to how Delta moved its operations to the new international terminal at Atlanta Hartsfield-Jackson that opened last May. By Ben Mutzabaugh, USA TODAY

Journalists on the hard-hat tour take in the airfield views that will greet fliers in T4's new extension of the B Concourse gate wing. By Ben Mutzabaugh, USA TODAY

Helping ease the extra distance added in the extension of the T4 gate area will be automated people-movers. Seen here to the left, the still-under-construction movers will move people in both directions. Currently, some T4 people-movers flow only toward the gates. In those areas, Delta and T4 are adding people movers that will help move arriving fliers, as well. By Ben Mutzabaugh, USA TODAY

Fliers using the new gates in the extension of T4's B Concourse will get great airfield views as they navigate the ramps toward their plane. By Ben Mutzabaugh, USA TODAY

Another of the sweeping views from the gates that are being built as part of the extension of T4's B Concourse. By Ben Mutzabaugh, USA TODAY

One of the new gates along the extension of T4's B Concourse, as seen from the tarmac. By Ben Mutzabaugh, USA TODAY

Another of the sweeping views from the gates that are being built as part of the extension of T4's B Concourse. By Ben Mutzabaugh, USA TODAY

This image provided by Delta shows the current layout of its T2, T3 and T4 structures at JFK. Delta Air Lines

This image provided by Delta shows what its JFK layout will look like once the T4 redevelopment is finished and T3 is demolished. The additions are shown in yellow. Also notice the planes parked in the area where T3 had been. Delta says this will permit quicker taxi times for planes that need servicing and light maintenance, which currently must be done at more-distant parts of the airport. Delta Air Lines